In this Squiz Kids Science Short, Christie explores what makes you… you. From the ancient Ship of Theseus to the science of cell turnover, brain rewiring and your gut microbiome, we discover your body is constantly changing.

So if your cells replace, your brain updates and even your microbes shift… what actually stays the same?

This episode unpacks when babies develop a sense of self, how memory and relationships might form the thread of identity, and leaves you with one big question:

Where exactly does “you” live?